Imperial blades 3MM250, 2-1/2 inch coarse tooth universal oscillating wood blades. This three pack of coarse tooth blades is designed for wood, drywall and soft plastics. This high carbon steel blade is specifically designed for aggressive cutting wood applications. Popular uses for this blade: cutting under the kick plate when installing new flooring, undercutting door jams, flush cutting tongue-and-groove wood. 12 TPI (teeth per inch). Blade dimensions: 2 1/2 inch wide x 1 5/8 inch plunge depth.